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So, during summer, I'm running a summer home school review/preview session to keep the children's skills up, both for educational reasons, and the structure.
My middle darling son is doing subtraction with borrowing, and having a simply *terrible* time knowing when to borrow. So, in talking out a problem with him, I'm asking "Okay, in the ones place, can you subtract 4 from 8?"
"Four."
"Good. Now in the tens place, can you subtract 7 from 4?" I'm expecting him to say, "No," so we can borrow from the hundreds place.
"Yes. It's negative 3."
Ah. I am seeing the issue. So, now that we know that we want answers on the bottom line that are always positive in each column, things are going more smoothly. It's funny for me to see how kid logic works sometimes.
My middle darling son is doing subtraction with borrowing, and having a simply *terrible* time knowing when to borrow. So, in talking out a problem with him, I'm asking "Okay, in the ones place, can you subtract 4 from 8?"
"Four."
"Good. Now in the tens place, can you subtract 7 from 4?" I'm expecting him to say, "No," so we can borrow from the hundreds place.
"Yes. It's negative 3."
Ah. I am seeing the issue. So, now that we know that we want answers on the bottom line that are always positive in each column, things are going more smoothly. It's funny for me to see how kid logic works sometimes.
